Nakdimon ben Gurion’s Deadline
The following story is mentioned in Ta‘anis (19b–20a): Once it happened when all Israel came up on pilgrimage (oleh regel) to Jerusalem that there was no water available for drinking.
Zmanim
Is a Deadline Day Inclusive?
Whether a time limit set 'until' a day or hour includes that day or hour itself, the Gemara's question of ad v'lo ad bichlal.